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How to do the transient simulation in cadence for differential op-amp?

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musthafafarhan

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I have designed the opamp , the nodes are Vin+, Vin-, Vcm, Vdd, Vss , Vo+, Vo- . I want to find the slew rate. First, I should know how to get the graph to check the slew rate.

If I want to simulate the transient simulation. I should have to set the pulse input. Can anyone guide me how to set the pulse voltage in Vin+, Vin- and transient simulation to find the slew rate.

Thank you in advance.
 
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erikl

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In open loop configuration it's enough to use a single pulse source in series with one of the Vcm bias supplies (small signal stimulus).

In closed loop configuration (your application) you better use 2 equal anti-phase pulse sources in series with a common Vcm bias supply and (if so) the gain setting input series impedance devices.
 

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